Alpinestars Vapor Adult Off-Road Motorcycle Knee Guard - Black/Large/X-Large CE certified protection systems utilizing robust protective structures and impact absorption padding Thermo-formed polymer material construction offers improved impact performance Dual strap closure system on Knee Protectors specially designed to offer more comfort and adjustment, with top strap mounted above the knee and lower strap positioned for ergonomic fit Advanced 3D poly padding for increased comfort and a close-fitting performance